A man fishing in a small kayak in Florida thought his luck was in when he caught a shark - that was until the shark decided to fight back.
Captain Ben Chancey hooked the shark which then flipped his boat, leaving him scrambling to swim to safety.
In a battle that drew both cheers and jeers on YouTube and almost two million views, he hooked the shark off Stuart, Florida.
The clip shows Chancey of Chew On This Fishing Charters revelling in the fight, until the shark pulls him into the water and his kayak capsizes. He then quickly swims to a nearby boat.
The video ends with a breathless Chancey re-boarding the kayak to make another attempt to catch the shark.
But Chancey's adventure did not earn universal admiration. One YouTube user wrote: "Absolutely cheering for the shark."
He originally had intended to catch a goliath grouper by lowering bait down into the water, when several bull sharks started swimming around his kayak, reports ABC News.
"After the bull shark ate the bait, that's when it started spinning me around and dragging me all over the ocean," he said.
"If you're in the water with them ... it's like being food. I swam faster than I ever swam before."
Bull sharks can grow up to 11 feet in length.